MPD: pcm/GlueResampler.hxx Source File

MPD 0.20.15

GlueResampler.hxx
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1 /*
2 * Copyright 2003-2017 The Music Player Daemon Project
3 * http://www.musicpd.org
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #ifndef MPD_GLUE_RESAMPLER_HXX
21 #define MPD_GLUE_RESAMPLER_HXX
22
23 #include "check.h"
24 #include "AudioFormat.hxx"
25 #include "FormatConverter.hxx"
26
27 class PcmResampler;
28 template<typename T> struct ConstBuffer;
29
35 class GluePcmResampler {
36 PcmResampler *const resampler;
37
38 SampleFormat src_sample_format, requested_sample_format;
39 SampleFormat output_sample_format;
40
45 PcmFormatConverter format_converter;
46
47 public:
48 GluePcmResampler();
49 ~GluePcmResampler();
50
51 void Open(AudioFormat src_format, unsigned new_sample_rate);
52 void Close();
53
54 SampleFormat GetOutputSampleFormat() const {
55 return output_sample_format;
56 }
57
61 void Reset();
62
63 ConstBuffer<void> Resample(ConstBuffer<void> src);
64 };
65
66 #endif
check.h
AudioFormat
This structure describes the format of a raw PCM stream.
Definition: AudioFormat.hxx:37
ConstBuffer< void >
Definition: ConstBuffer.hxx:45
GluePcmResampler::Close
void Close()
AudioFormat.hxx
GluePcmResampler::Reset
void Reset()
PcmFormatConverter
A class that converts samples from one format to another.
Definition: FormatConverter.hxx:37
FormatConverter.hxx
GluePcmResampler::Open
void Open(AudioFormat src_format, unsigned new_sample_rate)
GluePcmResampler::~GluePcmResampler
~GluePcmResampler()
PcmResampler
This is an interface for plugins that convert PCM data to a specific sample rate. ...
Definition: Resampler.hxx:32
SampleFormat
SampleFormat
Definition: SampleFormat.hxx:33
ConstBuffer
A reference to a memory area that is read-only.
Definition: FlacPcm.hxx:29
GluePcmResampler::GluePcmResampler
GluePcmResampler()
GluePcmResampler
A glue class that integrates a PcmResampler and automatically converts source data to the sample form...
Definition: GlueResampler.hxx:35
GluePcmResampler::Resample
ConstBuffer< void > Resample(ConstBuffer< void > src)
GluePcmResampler::GetOutputSampleFormat
SampleFormat GetOutputSampleFormat() const
Definition: GlueResampler.hxx:54